How are cloud masks used in Landsat 8?
This collection contains 96 Landsat 8 Operational Land Imager (OLI) Thermal Infrared Sensor (TIRS) terrain-corrected (Level-1T) scenes, displayed in the biomes listed below. Manually generated cloud masks are used to validate cloud cover assessment algorithms, which in turn are intended to compute the percentage of cloud cover in each scene.
How many pixels are covered in snow in Landsat 8?
In mountain ranges worldwide, reflectance signatures of nearly every MODIS snow-covered pixel and 93% of Landsat snow-covered pixels indicate the pixel includes other land covers (Selkowitz et al., 2014 ).
What kind of data is in Landsat Collection 1?
Landsat Collection 1 consists of Level-1 data products generated from Landsat 8 Operational Land Imager (OLI)/Thermal Infrared Sensor (TIRS), Landsat 7 Enhanced Thematic Mapper Plus (ETM+), Landsat 4-5 Thematic Mapper (TM)*, and Landsat 1-5 Multispectral Scanner (MSS) instruments.
How does geometric verify work on Landsat 4-5?
Landsat Geometric Verify Image and Report files are provided in Landsat 4-5 TM Collection 1 Tier 1 data products. These files help determine the geometric accuracy of each TM precision and terrain-corrected scene and contain summary statistics while listing all verification points.
What are the different filters for Landsat 8?
The plugin has four different filters to apply, Fmask and Blue Band are available for any Landsat scene, but Aerosol and Pixel QA (for the case of Landsat 8), are available only for scenes that are requested through ESPA, as we saw earlier.
Where does the cloud mask for mod09ga come from?
The cloud mask for the MOD09GA and MYD09GA products originates from the MOD35 cloud masking code and also forms the basis for approaches that utilize additional information from time series (Friedl et al., 2002; Platnick et al., 2003 ). Our validation of the MODIS cloud mask utilizes data from Landsat 8 (section 2.3.1 ).